Diuretic Management in Cirrhotic Ascites

Initial Combination Therapy

• In adults with cirrhosis‑related ascites, start oral spironolactone 100 mg daily together with furosemide 40 mg daily (maintaining a 100:40 mg ratio) to achieve optimal natriuresis while preserving serum potassium levels. Strong recommendation. 1

Administration Guidelines

• Give the combined spironolactone–furosemide dose as a single morning oral tablet; intravenous furosemide should be avoided because it can cause an acute fall in glomerular filtration rate. Strong recommendation. 1

Dose‑Escalation Protocol

• Increase both agents simultaneously every 3–5 days while preserving the 100:40 ratio; do not exceed spironolactone 400 mg daily and furosemide 160 mg daily. Strong recommendation. 1

Monitoring Schedule and Targets

• Assess patients at day 3, week 1, then monthly for three months:

Electrolyte‑Management Algorithm

All actions are supported by strong evidence. 1

Absolute Contraindications to Diuretic Initiation or Continuation

• Do not start or must stop diuretics if any of the following are present:

Strong recommendation. 1

Dietary Recommendations

• Sodium restriction: limit intake to 2 g/day (≈88 mmol, equivalent to 5 g of salt).
• Protein intake: 1.2–1.5 g per kilogram body weight per day to prevent malnutrition.
• Fluid restriction: not required when serum sodium is within normal range.

Strong recommendation. 1

Medication Interactions

• Avoid concurrent use of NSAIDs or COX‑2 inhibitors, as they impair diuretic response and increase the risk of renal injury. Strong recommendation. 1

Definition and Management of Refractory Ascites

• Ascites is considered refractory when it persists despite the maximum tolerated doses of spironolactone 400 mg and furosemide 160 mg daily for at least one week, together with sodium restriction < 5 g/day.
• Management steps:

Strong recommendation. 1

Management of Ascites in Chronic Liver Disease

Initial Dosing and Administration

• The American Association for the Study of Liver Diseases recommends an initial dose of spironolactone 100 mg and furosemide 40 mg orally once daily, maintaining a 100:40 ratio to optimize natriuresis and minimize electrolyte disturbances 2, 3
• The initial dose should be administered orally, as this route is preferred over intravenous in cirrhosis to avoid acute reductions in glomerular filtration rate 3
• Both medications should be given together in a single morning dose to maximize adherence and minimize nocturia 3

Dose Escalation

• If weight loss and natriuresis are inadequate after 3-5 days, both diuretics should be increased simultaneously, maintaining the 100:40 ratio 2, 3
• The maximum dose is spironolactone 400 mg and furosemide 160 mg per day 2, 3

Monitoring and Adjustments

• Daily weight, sodium, potassium, and creatinine levels should be monitored, especially during the first weeks of treatment 2, 3
• Electrolyte levels should be checked at 3 days, 1 week, and then monthly for 3 months 3
• If hypokalemia (potassium < 3 mmol/L) occurs, furosemide should be reduced or suspended, while maintaining spironolactone 2
• If hyperkalemia (potassium > 5.5-6.0 mmol/L) occurs, spironolactone should be reduced or suspended, and furosemide may be continued alone temporarily 2, 3

Contraindications and Precautions

• Absolute contraindications include creatinine > 2.5 mg/dL, sodium < 120-125 mmol/L, potassium > 5.0 mEq/L, and manifest hepatic encephalopathy without another precipitating factor 2, 3, 4
• Relative contraindications include anuria, marked hypovolemia, and concomitant use of NSAIDs or COX-2 inhibitors 2, 3, 4

Dietary Restrictions

• Sodium intake should be limited to 2 g/day (88 mmol/day), equivalent to 5 g/day of salt 2
• Protein intake should be 1.2-1.5 g/kg/day to prevent malnutrition 2
• Fluid restriction is not necessary if serum sodium is within the normal range 2

Definition of Refractory Ascites

• Refractory ascites is defined as ascites that does not respond to maximum doses of diuretics (spironolactone 400 mg and furosemide 160 mg) and sodium restriction < 5 g/day 2
• Paracentesis with albumin replacement (8 g per liter removed) is the treatment of choice for refractory ascites, rather than further increasing diuretic doses 2, 3